bergen



Aug. 12, 1924. 1,504,598

H. S. BERGEN MARKING- MACHINE F-iled June 5. 19 21 2 Sheets-Sheet l flake) S BERG/51f.

Aug; 12 1924.

H. s. BERGEN MARKING MACHINE Filed June 5, X921 2 Sheets-Shed 2 jvwentoz Patented Aug. 12, 1924..

UNITED STA-res PATENT OFFICE.

HARRY S. BERGEN, OF TOLEDO, OED), ASSIGNOR TO TOLEDO SCALE COMPANY, 013

v TOLEDO, OHIO, A GORTPORATION NEH/V JERSEY.

MARKING MACHINE.

Application filed June 3, 1921. Serial No. 474,821.

T 0 all whom it may concern:

Be it known that L HARRY S. BERGEN, a citizen of the United Edtates. residing at T0- ledo in the county Lucas and State of Ohio, have invented certain new and useful. Improvements in Marking Machines, of which the following is a specification.

This invention relates to machines such as are used for cutting stencils and stamping letters, numerals or other characters on metal surfaces.

)ne of its principal objects is the provision of a simple, compact and eificient device for stamping a plurality of characters in any desired sequence.

Another object is to provide efiective means for properly positioning and aligning the characters so stamped.

Another object is to provide effective means for moving the work holding table or alaten.

i till another object is to effectively CO1 bine an automatic hammer with a device carrying a plurality of marking punches adapted to be selectively brought into co operation therewith.

Other objects and advantages will be apparent from the following description, in which reference is had to the accompanying drawings illustrating a preferred. embodiment of my invention and wherein similar reference numerals designate similar parts throughout the several views.

In the drawings Figure 1 is an elevational view of a ma chine embodying my inventiom parts beiiiio; broken away to show the co-operative arrangement of the automatic hammer and one of the marking punches the remaining; punches being; removed for clearness of illustration Figure :2 is an enlarged fragmentary view showing a portion of the base of the machine and the rack and pinion for moving the platen;

Figure 3 is a fragmentary elevational view of the opposite side of the base showing the ratchet and pawl mechanism for aut0- matically feeding the work holding table;

Figure 4 isa plan view of the machine; and

Figure 5 is a sectional view of the automatic hammer employed.

Referring to the drawings. in detaih the base 1 of the machine is provided with a hollow boss 2 having a vertical central bore within which is a cylindrical post or standard 5 secured by means of a set screw 6. Rotatably mounted upon the post or stand ard 5 above the boss 2 is a hub 7 carrying a disk 8 which is provided near its periphery with a circular row of openings 9 within which are slidably mounted a plurality of marking punches 10, these punches bearing the numerals 0 to 9 and the letters of the alphabet respectively. The edge of the disk 8 is beveled and marked with characters opposite each of the punches corresponding to the characters which the punches are adapted to impress. The upper end of each of the openings 9 is ,counterbored to form a recess which receives the head 11 of the marking punch 10, as well as an expansive spring 12 which tends to hold the punch in the elevated position. in which it is shown in Figure 2, further upward movement of the punch being prevented by means of a collar 13 which is secured to the punch by a set screw 14. Each of the punches 10 is provided with a pin 15 which co-operates with a groove in the wall of the opening to prevent the punch from turning therein.

Fixedly secured by means of a set screw to the post or upright 5 is a sleeve 16 to which is pivoted a pair of parallel, arms 17 and 18, each of these arms being composed ofparallel bars pivotally secured to the sleeve 16 by means of screws 19. Pivotally mounted in each of the arms 17 and 18 is a split collar 20 and supported by the collars 20 is an automatic hammer 21. The arms 17 and 18 are normally held in the raised position in which they are shown in Figure 1 by means of a contractile spring, 22.. one end of which is connected to the arm 17 the other end being connected to the sleeve- 16. The parallel bars constituting the arm 18 are longer than the bars on the arm 17 and at their forward ends are provided with a handle 23 by means of which the hammer 21 may be moved downwardly against the upper side of one of the punch heads 11. Each of the punch heads 11 is provided with a radially extending groove 24 (see Figure 4) by means of which the punch carrying disk is held in position during the actuation of the automatic hammer, the groove allowing the slight radial movementof the automatic hammer which takes place it is moved upwardly and down wardly.

The mechanism of the automatic hammer per se is not of my invention. T have, however, considered it best to illustrate and briefly describe it in order that its relation to the other parts of my machine may clearly appear. Referring to Figure 1 it will be seen that the striking pin of the hammer is provided with a renewable rounded head 26 preferably of hardened steel. The pin 25 is slidably mounted in the lower end of a housing 27 and is normally held in its lowermost position by a comparatively weak spring 28. Slidably mounted in the housing above the striking pin 25 is a plunger 29, the lower end of which is bored, as at 30, to receive the reduced upper end 31 of the striking pin 25. Slidably mounted in a transverse bore in the plunger 26 is a pin 32 having an opening 33 therein which, when the pin 32 is in the position shown in Figure 5, is out of registration with the bore 30, the pin 32 being normally held in this position by a flat spring 3% secured within a groove 35 in the plunger 29. The plunger is normally held in its lowermost position by means of a comparatively strong spring 36.

hen in the operation of the device the automatic hammer is forced downwardly against the head 11 of the marking punch 10 the rounded lower end 26 of the striking pin 25 enters the radial groove 2-1 in the head of the marking punch and the marking punch is forced downwardlyinto engagement with the plate of metal or other material to be marked when the downward movement of the striking pin 25 is arrested. As the housing 27 continues to move downwardly, the stiff spring 36 is compressed between the cap at the upper end of the housing and the plunger 29., When the housing has moved downwardly a distance suiiicient to compress the spring 36 to the required extent the pin 32 is engaged by a cam-liken construction in the inner wall of the housing and is moved against the tension of the leaf spring 34 into such position that its vertical opening registers with the bore 30 The plunger 29 then shoots downwardly into engagement with the shoulder formed on the pin between the main portion of the pin and the reduced upper portion 31 the blow thus received by the pin being suficient to. drive the marking punch into the metal or other material to be marked sufficiently to leave an impression.

One of the bars of the arm 18 is extended rearwardly beyond its pivot to a point substantially above the rear side of the base 1, and depending from the rear end of this bar is a link 37, the lower end of which is connected to a member 38 which carries a pivoted pawl 39 the member 38 being rotatably mounted upon a shaft 40 which extends through the base 1 from rear to front. Fixed upon the shaft lO adjacent the member 38 is a ratchet wheel %1 which is engaged by the pawl 39, the teeth beingso turned that when the handle 23 is operated toforce the automatic hammer 21 downwardly the pawl slides over "the ratchet teeth, and when the hammer is allowed to ascend under the influence of the contractile spring the pawl engages the teeth and turns the. ratchet wheel 31, thereby partially rotating the shaft 10. The eXtentof rotation of the shaft 40 is controlled by an adjustable shield 43 rotatably mounted on the shaft 10 in juxtaposition to the. ratchet'wheel all. the shield having a cylindrical portion l lwhich registers with the outer ends of the teeth of the ratchet wheel 41 throughout the greater portion of the circumference of the ratchet wheel. The cylindrical portion of the shield 44: is cut away, however for a distance correspondin to the width of eight of the ratchet eeth. When the shield is located in the position shown in Figure 3 the pawl 39 rides over the cylindrical portion of the shield during the greater part of its movement, engaging the ratchet teeth for such a portion only of its return movement as will move the periphery of the ratchetwheel a distance equal to the width of one tooth. By loosening the binding screw 46 the shield 43 may be turned, however, to bring the cut away portion of its periphery to such a position that the pawl 39 will fall into engagement with one of the ratchetteeth at the beginning of its return movement. When the shield is thus adjusted the periphery of the ratchet wheel will be moved by the bore through a distance equal to about eight times the width of a tooth. Between these extreme adjustments the shield 13 may be arranged so that the periphery of the. ratchet wheel is moved any distance from the width of one tooth to eight times the width of one tooth.

Secured to the forward end of the shaft 40 is a pinion 47 which meshes with a rack 48 fixed to the lower side of a sliding member 49 so that the member 49 is indexed laterally at each operation of the automatic hammer. Slidably mounted upon the member 49 is the work holding table or platen 50 upon which the metal plate or other object to be marked is laid and secured in place by any preferred means.

It is believed to be apparent from the foregoing descriptionthat after each character is punched into the metal the table is moved laterally to a distancecontrolled by the adjustment of the shield 43 so that succes'sive operations of the automatic hammer will result in marking the metal plate or other objects with a row of characters in exact alignment. Adjustment of the platen such as makes it possible to mark the plate with two or more rows of characters is obtained by so mounting the platen on. the member a9 that it may be moved from front to rear and vice versa. This result is obtained by forming the platen with a dovetail recess in its lower face which receives the similarly shaped upper portion of the member 49. The member 49 is provided with a series of graduations 51 (see Figure 4) which co-operate with a pointer 52 (see Figure l). The platen may be locked in adjusted position on the member 49 by means of a screw having a handle 53 and so arranged that a partial movement of the screw will bring it into engagement with the beveled portion of the member 49.

WVhen the device is to be used for cutting stencils in stencil board or impressions are to be made in relatively soft material, the automatic hammer may be dispensed with and a plain punch substituted therefor. Impressions in harder metal may also be made Without the use of an automatic hammer, as the upper end of the plain punch may be struck with a hand hammer.

While it will be apparent that the illustrated embodiment of my invention herein disclosed is well calculated to adequately fulfill the objects primarily stated, it is to be understood that the invention is susceptible to variation, modification and change within the spirit and scope of the subjoined claims.

Having described my invention, 1 claim:

1. In a device of the class described, in combination, a frame, a marking punch carrier movably supported by said frame, an automatic hammer supported by said frame, and means for selectively bringing said marking punches into operative relation with said automatic hammer.

2. In a device of the class described, in combination, a frame, a disk-like punch car rier rotatably supported upon said frame, an automatic hammer supported by said frame, and a series of punches carried by said carrier and adapted to be selectively brought by rotation of said carrier into operative relation with said automatic hammer.

3. In a device of the class described, in combination, a frame, an automatic hammer supported thereby, a movable punch carrier supported by said frame, a series of marking punches carried by said carrier and. adapted to be selectively brought by movement thereof beneath said hammer, and means for moving said hammer downwardly against the punch positioned therebeneath.

4. In a device of the class described, in combination, a frame, an automatic hammer supported thereby, a movable punch carrier supported by said frame, a series of marking punches carried by said carrier and adapted to be selectively brought by movement thereof beneath said hammer, and means for moving said hammer downwardly against the punch positioned therebeneath, said hammer and punch having interlocking faces whereby movement of said carrier during a punching operation is prevented.

5. In a device of the class described, in combination, a base, a work holding platen supported thereby, a disk-like carrier rotatably supported above said base, a series of marking punches carried by said carrier and adapted to be brought by rotation thereof into punching position above said platen, an automatic hammer supported above said platen, and means for moving said hammer downwardly into engagement with the selected punch.

6. In a device of the class described, in combination, a base, a work holding platen supported thereon, a standard mounted on said base, adisk-like punch carrier rotatably mounted on said standard, a pair of parallel arms pivoted to said standard above said punch carrier, spring means normally holding said arms in elevated position, a punch operating device supported by said arms above said platen, a series of marking punches carried by said carrier and adapted to be selectively brought into marking position between said punch operating de vice and said platen, and means for swinging said arms downwardly against the tension of said spring means whereby said punch operating device is brought into engagement with the selected punch.

7. In a device of the class described, in combination, a base, a work holding platen supported thereon, a standard mounted on said base, a disk-like punch carrier rotatably mounted on said standard, a pair of parallel arms pivoted to said standard above said punch carrier, spring means normally holding said arms in elevated position, a punch operating device supported by said arms above said platen, a series of marking punches carried by said carrier and adapted to be selectively brought into marking posi tion between said punch operating device and said platen, means for swinging said arms downwardly against the tension of said spring means whereby said punch op crating device is brought into engagement with the selected punch, and means connected to one of said arms for shifting said platen laterally as said arm is elevated by said spring means.

HARRY S. BERGEN. Witnesses:

FRANCES DOYLE, HARRY ERNSBERGER. 

